321431076072436 has 24 divisors (see below), whose sum is σ = 645938047611360. Its totient is φ = 138415295916000.

The previous prime is 321431076072433. The next prime is 321431076072467. The reversal of 321431076072436 is 634270670134123.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 321431076072436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321431076072433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192243465715 + ... + 192243467386.

It is an arithmetic number, because the mean of its divisors is an integer number (26914085317140).

Almost surely, 2^{321431076072436} is an apocalyptic number.

It is an amenable number.

321431076072436 is an abundant number, since it is smaller than the sum of its proper divisors (324506971538924).

321431076072436 is a wasteful number, since it uses less digits than its factorization.

321431076072436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384486933135 (or 384486933133 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 321431076072436 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, seventy-six million, seventy-two thousand, four hundred thirty-six".